Poolesville, MD Weather Forecast
Montgomery County, Maryland
Seven-day outlook
41–72°F across the weekThe week runs between 42° and 72°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. Wednesday is the wettest day, peaking near 26%. 6 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Poolesville forecast
Poolesville sits at 39.1418°N, 77.4105°W in Montgomery County, Maryland. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Montgomery County
- Coordinates
- 39.1418°N, 77.4105°W
- Population
- 5,720 · 2023 estimate
- Land area
- 3.931 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Poolesville, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Poolesville?
The nearest Doppler radar is KLWX (Sterling, VA), 12 miles to the SSW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Poolesville its center is about 630 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Poolesville, so low-level rotation and the leading edge of a gust front show up on it. Poolesville is closer to its radar than 94% of US cities.
The closest instrument actually measuring the air is KJYO · Leesburg Exec on the ASOS/AWOS network, 9.0 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Maryland observing network as of this build.
Forecasts near Poolesville
- Leesburg, VA8 mi
- Gaithersburg, MD12 mi
- Herndon, VA12 mi
- Rockville, MD14 mi
- Lovettsville, VA15 mi
- Purcellville, VA16 mi
- Brunswick, MD17 mi
- Vienna, VA19 mi
Elsewhere in Maryland
BaltimoreFrederickGaithersburgRockvilleBowieHagerstownAll Maryland forecasts →